Los Angeles , California -LRB- CNN -RRB- -- `` Transformers '' actress Megan Fox said `` yes '' to ex-fiance Brian Austin Green 's marriage proposal , just four months after calling off a two-year engagement with Green , her publicist confirmed .

Fox , 24 , was so excited when Green , 36 , popped the question on a Hawaii beach that she dropped the 2-carat diamond engagement ring into the sand , Us Weekly magazine reported .

Despite a lengthy search by hotel staffers , the ring was never found , the magazine reported .

Fox and Green began dating six years ago and became engaged for the first time in 2007 . They broke it off last February .

Marriage may be easier for Fox now that she 's out of the `` Transformers '' franchise . Director Michael Bay announced this month that she is being replaced as Shia LaBeouf 's love interest by model-actress Rosie Huntington-Whiteley for `` Transformers 3 . ''

Fox portrayed Mikaela Banes in the first `` Transformers '' and its sequel `` Transformers : Revenge of the Fallen . ''

Green spent a decade playing David Silver on the hit TV series `` Beverly Hills , 90210 '' until it was canceled in 2000 .

CNN 's Brittany Kaplan contributed to this report

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Megan Fox engaged again to Brian Austin Green

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Diamond ring was lost on Hawaiian beach

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Fox and Green relationship started in 2004

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Couple 's first engagement ended in February